Coinbase finally sent me the notice that:
We completed our investigation of one or more recent transactions which violated our Cardholder Agreement. We’ve determined that you do not meet the criteria to unblock your card.
As a result, your Coinbase Card will remain blocked from more spending and can no longer be used.
The only recent transactions were payments to my Citi Double Cash card. And while that is not specifically on their exclusion list, they apparently didn’t like paying out $1300 in rewards this year.
So fair warning to anyone else doubling up on rewards…
Now just as soon as they release my ETH2 I’ll be done with them completely.